Question 1

An attempt to manipulate a turtle whose window has been closed raises an error.

Accepted Answer

A) True 
 B)False  True

Question 2

In the images module, how does the Image class represent an image?

Accepted Answer

A)   Using a detailed sample of the image's brightness values.
B)   Using a rasterized copy of the image's color values.
C)   Using a two-dimensional grid of RGB values.
D)   Using a pixel map determined by grayscale values.E) B) and C)
F) A) and D)

Question 3

The RGB system is called a true color system.

Accepted Answer

A) True 
 B)False

Question 4

How does digital information differ from analog information?

Accepted Answer

A)   Digital information can be represented as wave patterns, while analog information consists of bits.
B)   Digital information consists of a continuous range of values, while analog is a set of discrete values.
C)   Digital information consists of discrete values, while analog is a continuous range of values.
D)   Digital information is commonly used in basic image and sound devices, such as recorded records, while analog is used for electronic media.E) A) and D)
F) A) and C)

Question 5

Programming that relies on the use of objects and methods to control complexity and solve problems is known as what type of programming?

Accepted Answer

A)   access-based programming
B)   object-based programming
C)   serial-based programming
D)   entry-based programmingE) None of the above
F) All of the above

Question 6

Many image-processing algorithms use a nested loop structure to traverse a two-dimensional grid of pixels.

Accepted Answer

A) True 
 B)False

Question 7

The Turtle graphics toolkit was originally developed as part of what programming language for children?

Accepted Answer

A)   LISP
B)   FORTRAN
C)   Logo
D)   CKidsE) A) and D)
F) A) and C)

Question 8

What Turtle method is used to move the Turtle object instance t to the center of the window, pointed east?

Accepted Answer

A)   t.start() 
B)   t.home() 
C)   t.return() 
D)   t.restart() E) All of the above
F) C) and D)

Question 9

When discussing an image, what is an image's aspect ratio?

Accepted Answer

A)   The ratio of the image's width to its height.
B)   The ratio of the image's colors to their brightness.
C)   The ratio of the image's bitrate to its size.
D)   The ratio of the image's color gamut to its bitrate.E) A) and B)
F) B) and C)

Question 10

The ticks representing seconds on the analog clock's face represent an attempt to sample moments of time as discrete values, whereas time itself is continuous, or analog.

Accepted Answer

A) True 
 B)False

Question 11

An N-level c-curve can be drawn with a recursive function.

Accepted Answer

A) True 
 B)False

Question 12

The setPixels method of the Turtle class changes the width of the turtle in pixels to the specified value.

Accepted Answer

A) True 
 B)False  False

Question 13

Early recording and playback devices for images and sound were all discrete devices.

Accepted Answer

A) True 
 B)False

Question 14

What statement accurately defines what a pixel is?

Accepted Answer

A)   A pixel is the name for the graphical draw point of any graphics generating program.
B)   A pixel is the graphical equivalent of a byte in memory, and is used to store graphics data.
C)   A pixel is a graphical font, which is used to write image data onto a screen.
D)   A pixel is a colored dot, also known as a picture element, that makes up part of a display.E) A) and C)
F) None of the above

Question 15

When instantiating a class and assigning the resulting object to a variable, what is the right side of the assignment called?

Accepted Answer

A)   The instantiator statement.
B)   The spawner statement.
C)   The constructor statement.
D)   The creator statement.E) A) and B)
F) None of the above

Question 16

What is the maximum number of distinct color values that can be displayed by the true color RGB system?

Accepted Answer

A)   256
B)   16,384
C)   32,768
D)   16,777,216E) A) and D)
F) A) and C)

Question 17

What effect does a higher DPI have on the sampling done by a digital camera?

Accepted Answer

A)   It decreases the number of samples that are taken.
B)   It increases the number of samples that are taken.
C)   It decreases the amount of time needed for each sample.
D)   It increases the amount of time needed for each sample.E) A) and C)
F) B) and C)

Question 18

The images module is a standard, open-source Python tool.

Accepted Answer

A) True 
 B)False

Question 19

The GIF format uses a lossless compression scheme.

Accepted Answer

A) True 
 B)False  False

Question 20

What coordinate system is utilized for the Turtle graphics toolkit?

Accepted Answer

A)   cartesian system
B)   polar system
C)   square system
D)   fractal systemE) A) and B)
F) C) and D)

Exam 7: Simple Graphics and Image Processing

An attempt to manipulate a turtle whose window has been closed raises an error.

Correct AnswerverifiedTrue

In the images module, how does the Image class represent an image?

Correct AnswerverifiedShow Answer

The RGB system is called a true color system.

Correct AnswerverifiedShow Answer

How does digital information differ from analog information?

Correct AnswerverifiedShow Answer

Programming that relies on the use of objects and methods to control complexity and solve problems is known as what type of programming?

Correct AnswerverifiedShow Answer

Many image-processing algorithms use a nested loop structure to traverse a two-dimensional grid of pixels.

Correct AnswerverifiedShow Answer

The Turtle graphics toolkit was originally developed as part of what programming language for children?

Correct AnswerverifiedShow Answer

What Turtle method is used to move the Turtle object instance t to the center of the window, pointed east?

Correct AnswerverifiedShow Answer

When discussing an image, what is an image's aspect ratio?

Correct AnswerverifiedShow Answer

The ticks representing seconds on the analog clock's face represent an attempt to sample moments of time as discrete values, whereas time itself is continuous, or analog.

Correct AnswerverifiedShow Answer

An N-level c-curve can be drawn with a recursive function.

Correct AnswerverifiedShow Answer

The setPixels method of the Turtle class changes the width of the turtle in pixels to the specified value.

Correct AnswerverifiedFalse

Early recording and playback devices for images and sound were all discrete devices.

Correct AnswerverifiedShow Answer

What statement accurately defines what a pixel is?

Correct AnswerverifiedShow Answer

When instantiating a class and assigning the resulting object to a variable, what is the right side of the assignment called?

Correct AnswerverifiedShow Answer

What is the maximum number of distinct color values that can be displayed by the true color RGB system?

Correct AnswerverifiedShow Answer

What effect does a higher DPI have on the sampling done by a digital camera?

Correct AnswerverifiedShow Answer

The images module is a standard, open-source Python tool.

Correct AnswerverifiedShow Answer

The GIF format uses a lossless compression scheme.

Correct AnswerverifiedFalse

What coordinate system is utilized for the Turtle graphics toolkit?

Correct AnswerverifiedShow Answer

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